Answer:
4) Long exposure to low-energy radiation could give the same dose as a short burst of high-energy radiation.
Explanation:
When it comes to ionizing radiation, absorption should be kept as low as reasonably achievable (ALARA). This can be achieved by control of time spent in the vicinity of the source, the distance to the source and the use of personal protective equipment (PPE).
A short burst of high-energy radiation releases or generates a high radiation dose in a short time frame. This can also be achieved due to long exposure to low-energy radiation, which results into the gradual accumulation of the dose.
The point where you're standing ... (300, 400) ... is 500 m from the origin.
Light takes (500 m) / (3 x 10⁸ m/s) = 1.67 μs to travel from the origin to you.
So when you SEE the clock at the origin read 3.0 μs, you're
seeing it as it was 1.67 μs ago. YOUR clock says 4.67 μs .
Answer: 98 millimeters
Explanation:
Since angle VTY is congruent to angle VTK, segment TY bisects angle VTK. Since Y is on segment VK, between V and K, we can use the Angle Bisector Theorem, which states that
(1)
Since x= VK = VY + YK, we need to obtain VY since YK = 68.
VY is obtained by multiplying the denominator YK on both sides of equation (1). So,
Hence,
x = VK = VY + YK
x = 30 + 68
x = 98 millimeters
Answer:
10
Explanation:
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